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This paper proposes a Pulse Density Modulation (PDM) method with improved transient for high frequency converters such as Class E DC/DC or quasi-resonant boost converters. In contrast to frequency or duty cycle control, the conventional PDM control method provides high efficiency at any load when modulation frequency is low. However, efficiency drops significantly for higher modulation frequencies...
In this paper, a new AC-DC single stage three-level resonant converter has been proposed for high voltage DC distribution system of datacenters applications. This converter convert universal input voltage range (90–265Vrms) to 380VDC with high power factor. The proposed topology integrates a bridgeless boost converter and a half-bridge three level resonant converter. Voltage stresses on the switches...
With the growth of telecommunication systems in remote areas, demand of wind solar hybrid systems is demanding in this industry. In this paper a 3 MHz DC-DC converter for standalone wind/solar application is proposed. The proposed converter is able to operate at a high frequency and to function in a wide range of input voltage. These specs make the system ideal for wind/solar energy systems. All MOSFETs...
High frequency transformers are one of the essential building blocks to provide galvanic isolation for power converters. Due to the switching nature of the converter, electromagnetic compatibility (EMC) of these converters is an essential requirement, to ensure not only its own operation but also the safe and secure operation of surrounding electrical equipment that are connected to same power distribution...
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